CN113135506B - Hydraulic balance crane - Google Patents
Hydraulic balance crane Download PDFInfo
- Publication number
- CN113135506B CN113135506B CN202110483978.8A CN202110483978A CN113135506B CN 113135506 B CN113135506 B CN 113135506B CN 202110483978 A CN202110483978 A CN 202110483978A CN 113135506 B CN113135506 B CN 113135506B
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- arm support
- main arm
- hydraulic
- main
- boom
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
- B66C23/821—Bracing equipment for booms
- B66C23/823—Bracing equipment acting in vertical direction
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a hydraulic balance crane, which is characterized in that a first main arm support and a second main arm support are arranged, a first end of the second main arm support is hinged with a first end of the first main arm support, a second end of the second main arm support is connected with a lifting appliance, and lifting action of the lifting appliance is realized by the aid of the first main arm support and the second main arm support; and the gravity center adjusting device is arranged on the first main arm support to adjust the gravity center position of the first main arm support, so that the gravity center position of the first main arm support is adjusted when the first main arm support makes pitching motion to drive the lifting appliance to lift, and the energy consumption of the pitching motion of the first main arm support is reduced.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a hydraulic balance crane.
Background
At present, the balance crane basically adopts a steel wire rope to realize lifting of the lifting appliance, but the steel wire rope is easy to break, maintenance is often required, and meanwhile, the operation efficiency is relatively low.
In order to improve lifting efficiency of the lifting appliance and service life of the crane, some cranes adopt a hydraulic mechanism to realize lifting operation of the lifting appliance, however, the hydraulic mechanism completely utilizes an oil cylinder and the like to realize lifting of the lifting appliance, and a great amount of power is required to be consumed, in particular to lifting operation after the lifting appliance grabs goods. Therefore, the lifting energy consumption of the lifting appliance is high, and the efficiency is still to be improved.
Disclosure of Invention
In view of the above, the embodiments of the present invention are directed to providing a hydraulic balance crane, which solves the problems of greater energy consumption and lower efficiency of the crane during lifting.
An embodiment of the present invention provides a hydraulic balance crane, including: a first main boom; the first end of the second main arm support is hinged with the first end of the first main arm support, and the second end of the second main arm support is connected with the lifting appliance; the first main arm frame comprises a gravity center adjusting device, and the gravity center adjusting device adjusts the gravity center position of the first main arm frame.
In an embodiment, the hydraulic balance crane further comprises: the first end of the auxiliary arm support is hinged with the first end of the second main arm support, and the second end of the auxiliary arm support and the second end of the first main arm support are respectively hinged with two ends of the counterweight.
In an embodiment, the hydraulic balance crane further comprises: the two ends of the at least one reinforcing connecting rod are respectively hinged with the first main arm support and the auxiliary arm support, and the at least one reinforcing connecting rod is arranged in parallel with the second main arm support.
In one embodiment, the gravity center adjusting device includes: the liquid storage tanks are communicated with each other and distributed at the first end and the second end of the first main arm support, and the liquid which is communicated with each other is stored in the liquid storage tanks.
In an embodiment, the gravity center adjusting device further includes: the hydraulic pumps are respectively arranged in the liquid storage tanks and are configured to: and conveying the liquid in the corresponding liquid storage tank to other liquid storage tanks.
In an embodiment, the hydraulic balance crane further comprises: the travelling mechanism is arranged below the first main arm support and connected with the first main arm support and is configured to support the first main arm support; the turntable is arranged between the travelling mechanism and the first main arm frame, is rotationally connected with the travelling mechanism and hinged with the first main arm frame, and is constructed as follows: the first main arm frame horizontally rotates relative to the travelling mechanism.
In an embodiment, the hydraulic balance crane further comprises: the first driving mechanism is connected with the turntable and the first main arm support and is configured to: pushing the first main arm support to swing around a hinge point of the first main arm support and the turntable.
In one embodiment, the first drive mechanism includes: a first oil pump and a first oil cylinder; the first oil pump is in transmission connection with the first oil cylinder, and the first oil pump drives the first oil cylinder to do telescopic motion.
In an embodiment, the hydraulic balance crane further comprises: the second driving mechanism is connected with the first main arm support and the counterweight, and is hinged with one side of the counterweight, close to the auxiliary arm support, and is configured to: pushing the counterweight to drive the relative rotation between the auxiliary arm support and the counterweight.
In one embodiment, the second drive mechanism includes: a second oil pump and a second oil cylinder; the second oil pump is in transmission connection with the second oil cylinder, and the second oil pump drives the second oil cylinder to do telescopic motion.
According to the hydraulic balance crane provided by the embodiment of the invention, the first main arm support and the second main arm support are arranged, the first end of the second main arm support is hinged with the first end of the first main arm support, the second end of the second main arm support is connected with the lifting appliance, and lifting action of the lifting appliance is realized by utilizing the first main arm support and the second main arm support; and the gravity center adjusting device is arranged on the first main arm support to adjust the gravity center position of the first main arm support, so that the gravity center position of the first main arm support is adjusted when the first main arm support makes pitching motion to drive the lifting appliance to lift, and the energy consumption of the pitching motion of the first main arm support is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic balance crane according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a hydraulic balance crane according to another embodiment of the present application.
Fig. 3 is a schematic structural diagram of a gravity center adjusting device according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a hydraulic operating principle of a gravity center adjusting device according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a hydraulic working principle of a hydraulic balance crane according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Furthermore, in the exemplary embodiments, since the same reference numerals denote the same components having the same structures or the same steps of the same methods, if an embodiment is exemplarily described, only structures or methods different from those of the described embodiment will be described in other exemplary embodiments.
Throughout the specification and claims, when an element is referred to as being "connected" to another element, the one element can be "directly connected" to the other element or be "electrically connected" to the other element through a third element. Furthermore, unless explicitly described to the contrary, the term "comprising" and its corresponding terms should be construed to include only the recited components and should not be construed to exclude any other components.
Fig. 1 is a schematic structural diagram of a hydraulic balance crane according to an embodiment of the present application. As shown in fig. 1, the hydraulic balance crane includes: a first main boom 1 and a second main boom 2; the first end of the second main arm support 2 is hinged with the first end of the first main arm support 1, and the second end of the second main arm support 2 is connected with the lifting appliance 3; the first main boom 1 comprises a gravity center adjusting device 4, and the gravity center adjusting device 4 adjusts the gravity center position of the first main boom 1.
The hydraulic balance crane utilizes hydraulic driving force to realize the arm support action of the crane, thereby driving lifting or horizontal movement of a lifting appliance (comprising goods grabbed by the lifting appliance) connected to one end of the arm support, and realizing accurate grabbing of the lifting appliance or goods placing operation. In general, a hydraulic balance crane directly pushes a hydraulic cylinder by using the driving force of hydraulic oil in the hydraulic cylinder, so as to drive a boom and a supporting structure (such as a travelling mechanism and the like) which are respectively connected with the piston end and the chamber end of the hydraulic cylinder, wherein the piston end of the hydraulic cylinder can be connected with the boom, the chamber end of the hydraulic cylinder can be connected with the supporting structure, and the piston end of the hydraulic cylinder can also be connected with the supporting structure, and the chamber end of the hydraulic cylinder is connected with the boom, so that the pitching action of the boom relative to the supporting structure is realized, and then the lifting action of a lifting appliance at one end of the boom is driven. However, since the weight of the goods to be grabbed is generally large, in order to ensure that the boom and the lifting appliance can meet the grabbing requirement of the heavy goods, the strength and the weight of the boom and the lifting appliance are also large, so that the hydraulic force required by the boom in the pitching process is large. The larger hydraulic pressure not only consumes a large amount of energy, but also causes larger pressure on each component of the hydraulic mechanism because of overlarge hydraulic pressure, so that the loss of each component of the hydraulic mechanism is larger, and the service life of the hydraulic mechanism is influenced.
Therefore, the application provides a hydraulic balance crane, which adjusts the gravity center of a first main boom 1 according to the requirement in the actual operation process by arranging a gravity center adjusting device 4 on the first main boom 1, so as to reduce the gravity resistance of the first main boom 1 in the pitching process, thereby reducing the energy consumption of the first main boom 1 in the pitching process. For example, when the first main boom 1 is lifted, the gravity center of the first main boom 1 can be adjusted towards the end far away from the lifting appliance 3 by using the gravity center adjusting device 4, so that the lifting resistance of the first main boom 1 is reduced, and the energy consumption is saved; in addition, when the first main arm support 1 is in the depression process, the gravity center adjusting device 4 can be used for adjusting the gravity center of the first main arm support 1 to one end close to the lifting appliance 3, so that the depression resistance of the first main arm support 1 is reduced, the depression action of the first main arm support 1 can be assisted by gravity, and the energy consumption is further saved.
According to the hydraulic balance crane provided by the embodiment of the invention, the first main arm support and the second main arm support are arranged, the first end of the second main arm support is hinged with the first end of the first main arm support, the second end of the second main arm support is connected with the lifting appliance, and lifting action of the lifting appliance is realized by utilizing the first main arm support and the second main arm support; and the gravity center adjusting device is arranged on the first main arm support to adjust the gravity center position of the first main arm support, so that the gravity center position of the first main arm support is adjusted when the first main arm support makes pitching motion to drive the lifting appliance to lift, and the energy consumption of the pitching motion of the first main arm support is reduced.
In an embodiment, as shown in fig. 1, the hydraulic balance crane may further include: an auxiliary boom 5; the first end of the auxiliary boom 5 is hinged to the first end of the second main boom 2, the second end of the auxiliary boom 5 and the second end of the first main boom 1 are respectively hinged to two ends of the counterweight 6, and the first end of the second main boom 2 comprises two hinge points respectively hinged to the first end of the first main boom 1 and the first end of the auxiliary boom 5 along the extending direction of the second main boom 2. The first main arm support 1, the counterweight 6, the auxiliary arm support 5 and the second main arm support 2 are utilized to form a quadrilateral structure which is hinged with each other, so that the angle between adjacent sides (for example, the first main arm support 1 and the second main arm support 2) can be adjusted, and the swinging of the lifting appliance 3 is realized, so that the horizontal position of the lifting appliance 3 is adjusted. In a further embodiment, the auxiliary boom 5 and the first main boom 1 may be arranged in parallel, and the first main boom 1, the counterweight 6, the auxiliary boom 5 and the second main boom 2 form a parallelogram, and by using the characteristics of the parallelogram, the swing of the lifting appliance 3 is realized by adjusting the angle between the adjacent sides (for example, the first main boom 1 and the second main boom 2), so as to adjust the horizontal position of the lifting appliance 3.
In an embodiment, as shown in fig. 1, the hydraulic balance crane may further include: the two ends of the at least one reinforcing connecting rod 7 are respectively hinged with the first main arm support 1 and the auxiliary arm support 5, and the at least one reinforcing connecting rod 7 is arranged in parallel with the second main arm support 2. At least one reinforcing connecting rod 7 is arranged between the first main arm support 1 and the auxiliary arm support 5 so as to strengthen the connection strength of the first main arm support 1 and the auxiliary arm support 5, thereby avoiding deformation of the first main arm support 1 or the auxiliary arm support 5 possibly caused when heavy goods are grabbed and transported, and improving the weighing strength of the whole hydraulic balance crane. It should be appreciated that the number of the reinforcing connecting rods 7 may be selected according to the requirements of the actual application scenario, for example, a plurality of reinforcing connecting rods 7 may be set according to the lengths of the first main boom 1 and the auxiliary boom 5, or a plurality of reinforcing connecting rods 7 may be set according to a preset interval, as long as the number of the selected reinforcing connecting rods 7 can meet the weighing strength requirement of the hydraulic balance crane, and the specific number of the reinforcing connecting rods 7 is not limited in the embodiment of the present application.
Fig. 2 is a schematic structural diagram of a hydraulic balance crane according to another embodiment of the present application. As shown in fig. 2, the hydraulic balance crane may include: a first main boom 1 and a second main boom 2; the second end of the second main arm support 2 is connected with the lifting appliance 3, the first end of the second main arm support 2 comprises two hinge points arranged along the extending direction of the second main arm support 2, the first end of the first main arm support 1 and the second main arm support 2 are hinged to one hinge point, close to the lifting appliance 3, of the two hinge points, and a telescopic mechanism (such as a telescopic cylinder) is arranged on the first main arm support 1, one end of the telescopic mechanism is connected with the first main arm support 1, the other end of the telescopic mechanism is hinged to one hinge point, far away from the lifting appliance 3, of the two hinge points, of the second main arm support 2, the second main arm support 2 is pushed by the telescopic mechanism to swing around the hinge point between the second main arm support 2 and the first main arm support 1, so that the lifting appliance 3 at the second end of the second main arm support 2 is driven to swing; the first main boom 1 includes a center of gravity adjusting device 4, and the center of gravity adjusting device 4 adjusts the center of gravity of the first main boom 1. In this embodiment, the auxiliary boom in the above embodiment is not included, and only the telescopic mechanism is used to implement swinging of the second main boom 2 around the hinge point of the second main boom 2 and the first main boom 1, so as to implement swinging of the lifting appliance 3. It should be understood that this application is given by way of example only and is not limited to two configurations for achieving lifting and swinging of the spreader.
In one embodiment, as shown in fig. 1 and 2, the gravity center adjusting device 4 may include: the plurality of liquid storage tanks 41, the plurality of liquid storage tanks 41 are mutually communicated and distributed at the first end and the second end of the first main arm support 1, and the plurality of liquid storage tanks 41 store mutually circulated liquid. By providing a plurality of liquid tanks 41 distributed at both ends of the first main boom 1, and storing the liquids (such as water, oil, etc.) flowing through each other in the plurality of liquid tanks 41, the liquid in the liquid tank 41 at one end (such as the first end) of the first main boom 1 is transferred into the liquid tank 41 at the other end (such as the second end) of the first main boom 1 by utilizing the fluidity of the liquid, so as to adjust the gravity center of the first main boom 1 from the first end to the second end. It should be understood that, in the embodiment of the present application, the specific structure of the gravity center adjusting device 4 may be selected according to the requirements of the actual application scenario, for example, a chute along the extending direction of the first main boom 1 and a slider disposed in the chute may be provided, and the gravity center position of the first main boom 1 may be adjusted by changing the position of the slider in the chute, so long as the selected specific structure of the gravity center adjusting device 4 can realize the gravity center position adjustment requirement of the first main boom 1, and the specific structure of the gravity center adjusting device 4 is not limited in this embodiment of the present application.
Fig. 3 is a schematic structural diagram of a gravity center adjusting device according to an embodiment of the present application. As shown in fig. 3, two tanks are illustrated as an example, the two tanks 41 are respectively located at two ends (not necessarily located at the ends, but only near the two ends) of the first main boom 1, and the two tanks 41 are communicated with each other through a pipe 42. The liquid storage tanks 41 may be disposed inside the first main arm support 1, or may be disposed on a surface of the first main arm support 1, and the pipe 42 includes a parallel section parallel to the first main arm support 1 and an extension section near the two liquid storage tanks 41, where the parallel section is communicated with the extension section to form a passage for communicating the two liquid storage tanks 41. By providing parallel and extension pipes of straight construction, the flow-through performance of the liquid in the pipe 42 is improved, thereby improving the efficiency of the center of gravity adjustment device 4 in adjusting the center of gravity. In one embodiment, the junction of the parallel and extension segments is provided with a smooth chamfer (e.g., a smooth corner in FIG. 3) to reduce the resistance of the liquid at the junction of the parallel and extension segments, thereby further improving the flow through the conduit 42.
In a further embodiment, the gravity center adjusting device 4 may further include: the hydraulic pumps are respectively arranged in the liquid storage tanks 41, namely, one hydraulic pump is arranged in each liquid storage tank 41, and the liquid in the corresponding liquid storage tank 41 is conveyed into other liquid storage tanks 41 by the hydraulic pump. Hereinafter, two hydraulic pumps will be described as an example. Fig. 4 is a schematic structural diagram of a hydraulic operating principle of a gravity center adjusting device according to an embodiment of the present application. As shown in fig. 4, the hydraulic mechanism of the center of gravity adjusting device includes: a first tank 411, a second tank 412, a first hydraulic pump 43, a second hydraulic pump 44; the first hydraulic pump 43 and the second hydraulic pump 44 are respectively disposed in the first tank 411 and the second tank 412, and the first tank 411 and the second tank 412 are communicated. The first hydraulic pump 43 and the second hydraulic pump 44 are respectively arranged in the first liquid storage tank 411 and the second liquid storage tank 412, so that liquid in the liquid storage tank at one end of the first main boom 1 is conveyed to the other end of the first main boom 1, that is, liquid in the first liquid storage tank 411 is conveyed into the second liquid storage tank 412 by the first hydraulic pump 43, or liquid in the second liquid storage tank 412 is conveyed into the first liquid storage tank 411 by the second hydraulic pump 44, and therefore the gravity center position of the first main boom 1 is adjusted. It should be appreciated that the specific number of hydraulic pumps may be selected according to the requirements of the actual application scenario, for example, the plurality of liquid tanks 41 at one end of the first main boom 1 may be configured to share one hydraulic pump, as long as the specific number of the selected hydraulic pumps can achieve the gravity center position adjustment requirement of the first main boom 1, and the specific number of the hydraulic pumps is not limited in this embodiment of the present application.
In an embodiment, as shown in fig. 1 and 2, the hydraulic balance crane may further include: a travelling mechanism 8 and a turntable 9; the travelling mechanism 8 is arranged below the first main arm support 1 and connected with the first main arm support 1, the first main arm support 1 is supported, the turntable 9 is arranged between the travelling mechanism 8 and the first main arm support 1, the turntable 9 is rotatably connected with the travelling mechanism 8 and hinged with the first main arm support 1, and the turntable 9 is configured to realize horizontal rotation of the first main arm support 1 relative to the travelling mechanism 8. The first main arm support 1 can be supported by arranging the travelling mechanism 8, and the travelling mechanism 8 can be used for moving the first main arm support 1, the second main arm support 2, the lifting appliance 3, the auxiliary arm support 5 and the counterweight 6 so as to realize adjustment of different operation areas (such as different storage yards); by arranging the rotary table 9 between the travelling mechanism 8 and the first main arm support 1, the rotary table 9 can be utilized to realize the horizontal rotation of the whole of the first main arm support 1, the second main arm support 2, the lifting appliance 3, the auxiliary arm support 5 and the counterweight 6 relative to the travelling mechanism 8, so that the operation range of the hydraulic balance crane is enlarged.
In an embodiment, as shown in fig. 1 and 2, the hydraulic balance crane may further include: the first driving mechanism 10, the first driving mechanism 10 connects the turntable 9 and the first main boom 1, and the first driving mechanism 10 is configured to push the first main boom 1 to swing around the hinge point of the first main boom 1 and the turntable 9. The first driving mechanism 10 is arranged to push the first main arm support 1 to swing around the hinge point of the first main arm support 1 and the turntable 9, so that the pitching action of the first main arm support 1 is realized. Specifically, the first driving mechanism 10 may include: a first oil pump and a first oil cylinder; the first oil pump is in transmission connection with the first oil cylinder, and the first oil pump drives the first oil cylinder to do telescopic motion. By arranging the first oil cylinder and the first oil pump, the first main arm support 1 swings around the hinge point of the first main arm support 1 and the turntable 9 by using hydraulic oil as driving force, so that the pitching action of the first main arm support 1 is realized.
In an embodiment, as shown in fig. 1, the hydraulic balance crane may further include: the second driving mechanism 11, the second driving mechanism 11 connects the first main arm support 1 and the counterweight 6, and the second driving mechanism 11 is hinged with one side of the counterweight 6 close to the auxiliary arm support 5, and is configured as follows: the counterweight 6 is pushed to drive the relative rotation between the auxiliary boom 5 and the counterweight 6. Specifically, the second driving mechanism 11 may include: a second oil pump and a second oil cylinder; the second oil pump is in transmission connection with the second oil cylinder, and the second oil pump drives the second oil cylinder to do telescopic motion. By arranging the second oil cylinder and the second oil pump, the relative rotation between the auxiliary boom 5 and the counterweight 6 is realized by using hydraulic oil as a driving force, so that the parallelogram shape formed by the first main boom 1, the counterweight 6, the auxiliary boom 5 and the second main boom 2 is changed, and the included angle between the second main boom 2 and the first main boom 1 is adjusted, namely the swing of the lifting appliance 3 at the second end of the second main boom 2 is driven.
The first oil pump and the second oil pump in the embodiment of the application can be two independent oil pumps so as to separate lifting motion and swinging motion of the lifting appliance 3, and the lifting motion and the swinging motion of the lifting appliance 3 can be realized simultaneously by using the same oil pump. The lifting and swinging movements of the spreader 3 by a single oil pump will be described as an example. Fig. 5 is a schematic structural diagram of a hydraulic working principle of a hydraulic balance crane according to an embodiment of the present application. As shown in fig. 5, the hydraulic system may include: the oil pump 21, the check valve 22, the relief valve 23, the first reversing valve 24, the second reversing valve 25, the first balancing valve 26, the second balancing valve 27, the first oil cylinder 28 and the second oil cylinder 29. The first reversing valve 24, the first balancing valve 26 and the first oil cylinder 28 form a first branch, the second reversing valve 25, the second balancing valve 27 and the second oil cylinder 29 form a second branch, the first branch is connected with the second branch in parallel, and the first branch and the second branch are communicated with the one-way valve 22 and the oil pump 21; the safety valve 23 is disposed between the check valve 22 and the first and second branches, and is used for protecting the whole hydraulic pipeline.
When the check valve 22, the safety valve 23, the first reversing valve 24 and the first balance valve 26 are opened simultaneously, the oil pump 21 pumps the hydraulic oil in the oil tank into the first oil cylinder 28 or pumps the hydraulic oil in the first oil cylinder 28 into the oil tank so as to realize the telescopic movement of the first oil cylinder 28, thereby driving the first main boom 1 to swing around the hinge point of the first main boom 1 and the turntable 9 so as to realize the pitching action of the first main boom 1, and driving the lifting movement of the lifting appliance 3. And after the first cylinder 28 reaches a prescribed position or state, the first cylinder 28 may be locked with the first balance valve 26 to maintain the state of the first main boom 1. During operation of the oil pump 21 or before operation of the oil pump 21, the center of gravity adjusting device 4 may adjust the center of gravity of the first main boom 1 according to the motion of the first main boom 1.
When the check valve 22, the safety valve 23, the second reversing valve 25 and the second balance valve 27 are opened simultaneously, the oil pump 21 pumps the hydraulic oil in the oil tank into the second oil cylinder 29 or pumps the hydraulic oil in the second oil cylinder 29 into the oil tank so as to realize the telescopic movement of the second oil cylinder 29 and realize the swinging of the second main boom 2 around the hinge point of the second main boom 2 and the first main boom 1, thereby driving the swinging movement of the lifting appliance 3. And after the second cylinder 29 reaches a prescribed position or state, the second cylinder 29 may be locked with the second balance valve 27 to maintain the state of the spreader 3.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is to be construed as including any modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. A hydraulic balance crane, comprising:
a first main boom; the first main arm frame comprises a gravity center adjusting device, and the gravity center adjusting device adjusts the gravity center position of the first main arm frame;
the first end of the second main arm support is hinged with the first end of the first main arm support, and the second end of the second main arm support is connected with the lifting appliance;
the first end of the auxiliary arm support is hinged with the first end of the second main arm support, and the second end of the auxiliary arm support and the second end of the first main arm support are respectively hinged with two ends of the counterweight;
the two ends of the at least one reinforcing connecting rod are respectively hinged with the first main arm support and the auxiliary arm support, and the at least one reinforcing connecting rod is arranged in parallel with the second main arm support; and
the second driving mechanism is connected with the first main arm support and the counterweight, and is hinged with one side of the counterweight, close to the auxiliary arm support, and is configured to: pushing the counterweight to drive the relative rotation between the auxiliary arm support and the counterweight.
2. The hydraulic balance crane of claim 1, wherein the center of gravity adjustment device comprises:
the liquid storage tanks are communicated with each other and distributed at the first end and the second end of the first main arm support, and the liquid which is communicated with each other is stored in the liquid storage tanks.
3. The hydraulic balance crane of claim 2, wherein the center of gravity adjustment device further comprises:
the hydraulic pumps are respectively arranged in the liquid storage tanks and are configured to: and conveying the liquid in the corresponding liquid storage tank to other liquid storage tanks.
4. The hydraulic balancing crane of claim 1, further comprising:
the travelling mechanism is arranged below the first main arm support and connected with the first main arm support and is configured to support the first main arm support; and
the revolving stage, the revolving stage set up in running gear with between the first main arm frame, the revolving stage with running gear swivelling joint, with first main arm frame articulates, constructs to: the first main arm frame horizontally rotates relative to the travelling mechanism.
5. The hydraulic balancing crane of claim 4, further comprising:
the first driving mechanism is connected with the turntable and the first main arm support and is configured to: pushing the first main arm support to swing around a hinge point of the first main arm support and the turntable.
6. The hydraulic balancing crane of claim 5, wherein the first drive mechanism comprises:
a first oil pump and a first oil cylinder;
the first oil pump is in transmission connection with the first oil cylinder, and the first oil pump drives the first oil cylinder to do telescopic motion.
7. The hydraulic counter-balance crane of claim 1, wherein the second drive mechanism comprises:
a second oil pump and a second oil cylinder;
the second oil pump is in transmission connection with the second oil cylinder, and the second oil pump drives the second oil cylinder to do telescopic motion.
Priority Applications (1)
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| CN202110483978.8A CN113135506B (en) | 2021-04-30 | 2021-04-30 | Hydraulic balance crane |
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| CN113135506B true CN113135506B (en) | 2023-05-26 |
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| EP4008679A1 (en) | 2020-12-03 | 2022-06-08 | Reel | Articulated boom crane, for offshore application |
Citations (5)
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|---|---|---|---|---|
| CN102502409A (en) * | 2011-11-08 | 2012-06-20 | 中国矿业大学 | Horizontal pinned hydraulic system of crawler crane counterweight |
| CN102616674A (en) * | 2012-03-28 | 2012-08-01 | 李军希 | Boom with folding structure |
| CN103145051A (en) * | 2013-03-13 | 2013-06-12 | 杭州国电大力机电工程有限公司 | Separated hoisting device of offshore wind turbine generator, and installation method |
| CN103832934A (en) * | 2012-11-26 | 2014-06-04 | 徐州徐工随车起重机有限公司 | Foldable car crane |
| CN106276639A (en) * | 2016-08-23 | 2017-01-04 | 北汽福田汽车股份有限公司 | Jib balance weight mechanism and crane |
-
2021
- 2021-04-30 CN CN202110483978.8A patent/CN113135506B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502409A (en) * | 2011-11-08 | 2012-06-20 | 中国矿业大学 | Horizontal pinned hydraulic system of crawler crane counterweight |
| CN102616674A (en) * | 2012-03-28 | 2012-08-01 | 李军希 | Boom with folding structure |
| CN103832934A (en) * | 2012-11-26 | 2014-06-04 | 徐州徐工随车起重机有限公司 | Foldable car crane |
| CN103145051A (en) * | 2013-03-13 | 2013-06-12 | 杭州国电大力机电工程有限公司 | Separated hoisting device of offshore wind turbine generator, and installation method |
| CN106276639A (en) * | 2016-08-23 | 2017-01-04 | 北汽福田汽车股份有限公司 | Jib balance weight mechanism and crane |
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| CN113135506A (en) | 2021-07-20 |
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